I am trying to setup proxmox on Dell r720xd, which does have UEFI boot option but can not boot from PCIe nvme drives.
If I install proxmox (or any os) on a usb flash, it boots fine.
For testing, I installed CentOS with advanced partitioning, and used USB flash as
/boot partition, and nvme for all other partitions and that too works flawlessly.
With proxmox, there is no custom partitioning option during the setup, so I was unable to set usb key as
/boot partition during install.
Other option listed in proxmox forums are
- use clover as bootloader on a USB key, described here
- install debian first with custom partition and then install proxmox over it and remove debian kernel.
Obviously clover is adding a boot partition on usb and then forwarding the control to nvme.
My question is, how to install proxmox on nvme and then migrate the
/boot partition to the usb flash?
Seems like a very straight forward process and I followed this guide to handle it, however, I could not get it to work. grub2 always complained with messages like
- not matching UUID
- you need to load kernel first
- and so on
any hints please.
P.S. I also tried to edit the centos
/boot installed on flash drive, by using
grub2-mkconfig which found the proxmox and updated the
grub.cfg but still got errors during boot like
- error: cant't find command linux
- error: cant't find command initrd
fixed these errors (ref) by
linuxefi and initrdefibut then it could not find the drive with given UUID